The Week’s 10 Biggest Funding Rounds: Defense Tech, AI Tools And Infrastructure Lead The Way
Crunchbase
Read full postIn the week ending August 21, 2026, Castelion led U.S. startup funding with an $800M Series C round for its hypersonic missile tech, valuing it at $13B. Other major rounds included Etched's $700M for AI inference clusters and Higgsfield's $400M for AI video tools.
